The subtropical highland variety of the oceanic climate exists in elevated portions of the world that are within either the tropics or subtropics, though it is typically found in mountainous locations in some tropical countries. Despite the latitude, the higher altitudes of these regions mean that the climate tends to share characteristics with oceanic climates, though it also tends to experience noticeably drier weather during the "low-sun" season. In locations outside the tropics, other than the drying trend in the winter, subtropical highland climates tend to be essentially identical to an oceanic climate, with mild summers and noticeably cooler winters, plus, in some instances, some snowfall. In the tropics, a subtropical highland climate tends to feature spring-like weather year-round. Temperatures here remain relatively constant throughout the year and snowfall is seldom seen.Without the elevation, many of these regions would likely feature either tropical or humid subtropical climates.

The average temperature for the year in Mexico City is 63.0°F (17.2°C). The warmest month, on average, is May with an average temperature of 67.0°F (19.4°C). The coolest month on average is January, with an average temperature of 57.0°F (13.9°C).

The highest recorded temperature in Mexico City is 91.0°F (32.8°C), which was recorded in May. The lowest recorded temperature in Mexico City is 26.0°F (-3.3°C), which was recorded in January.

The average amount of precipitation for the year in Mexico City is 25.0" (635 mm). The month with the most precipitation on average is July with 5.1" (129.5 mm) of precipitation. The month with the least precipitation on average is February with an average of 0.2" (5.1 mm).